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Ⅰ Does blockchain really have development prospects?
Blockchain undoubtedly has development prospects, and the necessary condition for development prospects is to enter the mainstream market.
Matt Spoke, founder and CEO of North American blockchain infrastructure The OAN (formerly Aion Network), published an article in Forbes on July 24 titled "In order to successfully enter the mainstream market, blockchain projects must "Eat Dog Food", in which Matt mentioned his views on how blockchain should enter the mainstream market - "Eat Dog Food".
In the technology circle, there is a jargon called "dogfooding" (also known as eating your own dog food), which refers to a company using its own products and becoming a user of its own products. Many high-growth companies (such as Microsoft, Facebook, Amazon, Apple, Netflix and Google) also use dog food to test products or help build credibility for their products. Although "eating dog food" is often used to find and fix bugs, it has another value: creating reliable use cases for the company's products.
This is worth learning from blockchain projects, because blockchain projects often hold the idea of "if it is built, they (users) will naturally come" and habitually create new and interesting things. Responsibility for blockchain applications is given to third parties.
This attitude is so common that even the well-known blockchain summit Consensus 2019 (2019 Consensus Conference) also held a conference titled "Build it, they (users) will naturally come: Creating a global area" Blockchain Center's roundtable forum discusses how governments around the world can make efforts to attract blockchain projects while balancing regulatory, investment and innovation needs.
To be fair, this strategy may be effective for blockchains that only target cryptocurrency circles. For security tokens, especially exchanges that trade such representatives, this makes even more sense - "supply creates demand" is the usual thinking here, especially considering the complex infrastructure required to implement these transactions. .
In contrast, "eating dog food" is more likely to be used by blockchain project developers seeking mainstream audiences (such as those in the financial industry, manufacturing and supply chain, identity management, etc.) use. If blockchain technology wants to break into these mainstream fields, blockchain companies must first "eat dog food." This will not only clearly prove that blockchain technology is feasible outside the currency circle, but also highlight that blockchain can not only optimize existing use cases, but also create new use cases.
The OAN team has always adhered to this concept and relied on the technology stacks of The OAN and Aion built over the years to develop Moves, a financial technology platform for independent workers.
Matt said that when developing and developing the Moves product, the team hopes that the relevant functions of The OAN blockchain network can be fully utilized.play, so the focus will be on the following three aspects:
1. How to use The OAN blockchain network to improve the credit efficiency of products.
There are two main considerations for improving credit efficiency: 1) Can Zheng Lu learn from the mechanisms of the DeFi market to reduce capital costs; 2) Can blockchain technology be used to increase the external credit process for Moves? of trust. Here, Moves will form a "pooling of wisdom" mechanism, allowing everyone to contribute to reducing credit risks and increasing the credibility of the credit granting process, and may even develop a micro-guarantee mechanism in the future. Therefore, users will be able to participate in the market established by the platform as a borrower, lender or guarantor.
2. How to align the interests of products and users.
Specifically, by connecting Moves to The OAN network, and with the help of the digital asset Aion, a relationship of consistent interests is formed between the product and the user, so that users can experience Moves personally. Whether the product development is successful or not, you can also directly participate in the blockchain network that supports Moves - The OAN.
3. How to create a pioneering financial reputation data open system with Moves.
This open system may become a replacement for traditional credit scores or related mechanisms. For years, banks and financial institutions have used scores from Equifax, FICO or others as risk indicators, and the Moves team believes the product it is building will be a good start - a better, more modern financial system. The beginning of the reputation system. This is a long-term goal.
Moves supports mainstream ride-sharing, food delivery and other gig economy concept platforms in North America and will be the flagship open application developed by The OAN on its blockchain network. In June, Moves' business operations expanded from Ontario to two more provinces - Alberta and British Columbia, and into Western Canada.
The various measures taken by The OAN team are all based on the spirit of "eating dog food" and working hard to allow blockchain technology to enter the mainstream market as soon as possible. Blockchain is not for the niche, but for the mainstream. In addition to The OAN team, many projects and institutions in the blockchain industry are also moving towards this goal. With such an excellent and targeted blockchain, what can you do? Are you saying there is no development prospect?
II How is Qulian Technology doing in privacy computing?
The latest news is that Qulian Technology, as one of the representatives of blockchain companies, was selected by the Privacy Computing Alliance "Privacy Computing Industry Map 1.0" jointly compiled by the Big Data Technology Standards Promotion Committee of the China Association for Standardization.
QuLian Technology independently developed BitXMesh, a blockchain privacy computing platform. It is the first digital platform that combines blockchain with secure multi-party computing technology and supports on-chain and off-chain collaboration.The data sharing platform meets the data value transfer needs under privacy protection requirements, breaks data silos, and realizes data that is "available, invisible, controllable and measurable." From 2020 to 2022, BitXMesh has passed the "Special Evaluation of Basic Capabilities of Multi-party Secure Computing", "Special Evaluation of Basic Capabilities of Blockchain-Assisted Privacy Computing Tools", "Special Evaluation of Multi-party Secure Computing Performance" and "Basic Capabilities of Federated Learning" by the Ministry of Industry and Information Technology. Special Evaluation", and the performance test evaluation results exceed the industry average by more than 10 times, making it a trusted infrastructure for building a distributed data element market.
Speed up to find out more about it. Thanks for the invitation.
Ⅲ What is blockchain and what are its uses? Will it become a new trend?
Three questions about blockchain (economic hot spots)
In recent times, related to Bitcoin The news about currency is very eye-catching, and blockchain has also become popular. In the capital market, the stock prices of various blockchain concept stocks rise and fall like a thrilling roller coaster. It can be seen from the responsive capital market that blockchain is on the forefront and has received great attention from all parties.
"Blockchain technology is essentially a database technology, specifically a ledger technology. The ledger records the asset changes and transactions of one or more accounts. In fact, it is A database with the simplest structure. The running accounts we usually write down in small notebooks and the statements sent by the bank are all typical account books." Wang Jun, chief researcher of Tencent Financial Technology Think Tank, said that security is an aspect of blockchain technology. Its major features are mainly reflected in two aspects: first, the distributed storage architecture, the more nodes, the higher the security of data storage; second, its tamper-proof and decentralized ingenious design, it is difficult for anyone to not follow the rules change the data.
Take online shopping transactions as an example. The traditional model is that the buyer purchases the goods and then transfers the money to the intermediary platform of a third-party payment institution. After the seller ships the goods and the buyer confirms receipt, the buyer will then notify the payment The institution transfers the money to the seller's account. The transaction model supported by blockchain technology is different. Buyers and sellers can trade directly without going through any intermediary platform. After the buyer and seller trade, the system releases the transaction information through broadcast. All hosts that receive the information record the transaction after confirming that the information is correct, which is equivalent to all hosts making data backups for this transaction. Even if there is a problem with a certain machine in the future, it will not affect the data recording, because there are countless machines as backup.
When it comes to blockchain, many people associate it with Bitcoin, and many people even equate blockchain with Bitcoin. He Fei said that Bitcoin is a presentation method of blockchain, but blockchain is not the same as Bitcoin. Blockchain is the underlying technology and infrastructure of Bitcoin, and Bitcoin is a successful application of blockchain, but it does not mean that blockchain can only be applied to Bitcoin.
What is the use of blockchain?
It can solve the pain points and difficulties in many fields such as finance, public welfare, supervision, and anti-counterfeiting, but there are many applicable conditions
Financial services are the first use of blockchain technologyApplication areas. The use of blockchain technology can solve pain points in many fields such as payment, asset management, and securities.
Take the payment field as an example. The cost of reconciliation, clearing, and settlement between financial institutions, especially cross-border financial institutions, is high and involves many manual processes. The high fees also make it difficult to carry out micropayment business. The application of blockchain technology can help reduce the cost of reconciliation and dispute resolution between financial institutions, and significantly improve the processing efficiency of payment services. In addition, the cost and efficiency advantages that blockchain technology brings to the payment field enable financial institutions to better handle small-amount cross-border payments that were previously considered unrealistic due to high costs, helping to achieve inclusive finance.
For example, in order to solve the problem of high reconciliation costs among financial institutions, in August 2016, WeBank and Shanghai Huarui Bank launched the Weilidai inter-institution reconciliation platform, which is also the first in production in China. Banking industry consortium chain application scenarios running in the environment. Zhang Kaixiang, chief architect of WeBank’s blockchain, believes that the high cost problem that the traditional “batch file reconciliation” model has not been able to solve for a long time is where blockchain technology comes in. Subsequently, Luoyang Bank and Changsha Bank also successively connected to the inter-institution reconciliation platform. Through blockchain technology, they optimized the inter-institution reconciliation process in the micro-loan business, achieving quasi-real-time reconciliation, improving operational efficiency, and reducing operating costs. Target. Up to now, the platform has been running stably for more than a year, maintaining zero failures, and the number of real transactions recorded has reached tens of millions.
In the field of public welfare, blockchain technology also has great potential. Ant Financial's first application scenario involving blockchain was public welfare, helping a group of hearing-impaired children obtain a donation, and then using blockchain technology to promote public welfare to be more open and transparent. Hu Danqing, senior product expert at Ant Financial Technology Lab, said: "The blockchain charity platform is like us building a post office on the Internet specifically for mailing funds. Every money donated by users, we will package it into a The package is delivered through the blockchain platform. Every time it passes through a node, we will stamp a postmark and finally deliver it to the recipient. This ensures that every money donated by users is transparent, traceable, and difficult to tamper with. ”
Blockchain technology can play a big role in combating counterfeit goods. Hu Danqing introduced that Ant Financial uses blockchain technology to trace the origin of authentic products. At present, there are some overseas shopping products from Australia and New Zealand, such as milk powder. You can use Alipay to scan the products to know whether they are genuine. "Unlike the previous self-entered product information by merchants, blockchain allows multiple 'bookkeepers' to complete accounting fairly, independently, and non-repudiation."
For financial supervision, blockchain Technology can also play a role. The "Financial Blockchain Underlying Platform FISCO BCOS White Paper" released by the Financial Blockchain Cooperation Alliance (Shenzhen) in 2017 believes that blockchain provides financial regulatory agencies with consistent and easy-to-audit data. Data analysis can be faster and more precise than traditional audit processesAccurately supervise financial businesses. For example, in an anti-money laundering scenario, the balance and transaction records of each account are traceable, and no aspect of any transaction will be out of sight of supervision, which will greatly enhance anti-money laundering efforts.
Some people in the industry believe that blockchain 1.0 is mainly aimed at digital currency; blockchain 2.0 is aimed at smart contracts and can be applied in the financial market; blockchain 3.0 will be applicable to more scenarios, and even Create a "blockchain era".
He Fei believes that blockchain can indeed solve the pain points and difficulties in many fields, but blockchain is not a panacea and has many applicable conditions.
For example, the decentralized nature of blockchain technology is suitable for scenarios involving multi-party participation. If it is only unilateral or bilateral participation, it will be of little value. Since each node needs to be checked, blockchain technology is not suitable for high-frequency trading activities.
For another example, blockchain emphasizes openness and transparency and is not suitable for scenarios with particularly high data privacy requirements.
Will blockchain become a new trend?
The technology is not yet mature, so we must be wary of concept hype, and we must distinguish between technological innovation and fund-raising innovation. We cannot use blockchain for the sake of blockchain
The concept of blockchain is so Will Fire become another “Internet+” in the future?
In recent years, the development ecosystem of blockchain has gradually been improved and enriched. Industry insiders believe that with national policy support, widespread attention and financial support, blockchain technology can achieve gradual and stable progress. Although the upside prospects of blockchain technology are broad, we must remain calm about this.
“Although blockchain is currently very popular, we still believe that it is still in a very early stage.” Hu Danqing said that there is currently false enthusiasm in the blockchain concept, and it is not the technology that solves the problem. The real problem is that the focus is on raising funds to make money and hyping valuations. In particular, most of the so-called ICOs (Initial Coin Offerings) that are so popular are innovations in fundraising tools and have nothing to do with technological innovation.
Blockchain technology can indeed create great value, but some risks cannot be ignored.
“Blockchain technology is not yet mature, and its application scenarios are relatively limited. We should be more wary of the concept of capital market speculation.” He Fei said that behind the blockchain boom, there will inevitably be some gimmicks and speculation. Companies that do not really carry out business, but just try to make a profit in the capital market and leave. We must be careful to prevent the occurrence of "bad money driving out good money", causing institutions that really want to do business to withdraw from the market, affecting the development of blockchain technology. application.
Hu Danqing suggested that for the current blockchain craze, regulatory authorities should intervene more proactively, distinguish between technological innovation and fund-raising innovation, and encourage government organizations, credible experts, and industry participants to jointly help the public Identify and comprehensively curb fund-raising innovation in the name of blockchain, so that the actual controller of ICO must bear responsibility for the fund-raising behavior. “The basis for judging whether it is a technological innovation or a fundraising innovation is actually very clear, that is, whether it starts with trust and whether it creates actual value by solving the trust problem.”
To better promote and use blockchain technology in the future, we need to continue to improve infrastructure and strengthen the formulation of relevant laws and policies.
Wang Jun believes that there is still room for optimization and improvement in core blockchain technologies such as consensus algorithms; on the other hand, the processing efficiency of blockchain is still difficult to reach that of some high-frequency application environments in reality. Require. At present, the mainstream blockchain technology platforms all originated from abroad. Domestic blockchain technology service providers must patiently start from the bottom development, achieve independent and controllable technology, and strive to lead the development of global blockchain technology. Enterprises with blockchain application scenarios must actively embrace new things and scientifically evaluate their on-chain needs. They cannot use blockchain for the sake of blockchain.
He Fei believes that the government can introduce relevant policies to guide companies that are interested in participating in the research and development and application of blockchain technology, and at the same time clarify some suitable application scenarios of blockchain and areas encouraged by the state.
The "China Blockchain Technology and Application Development White Paper 2016" recommends that government departments at all levels learn from the advanced practices of developed countries and regions, combine the development of my country's blockchain technology and applications, and promptly introduce blockchain Technology and industrial development support policies focus on supporting key technology research, major demonstration projects, "mass entrepreneurship and innovation" platform construction, system solution research and development, and public service platform construction. At the same time, it is recommended that key domestic enterprises, scientific research, universities and user units strengthen cooperation to speed up research on core key technologies such as consensus mechanisms, programmable contracts, distributed storage, and digital signatures.
If it can bring money to the enterprise, it will become a hot topic.
IV How much does it cost to develop a live video APP
How much does it cost to develop a live video APP
First of all, I want to ask you a basic question. Customized development, source code development and template application are the three methods of live broadcast APP development. Which method do you choose? This question is very critical and related to the answer to your question.
Some people say that you should not think about customized development of live broadcast APPs because it is too expensive. Others say that you should never directly use templates for live broadcast APP development. It is too spicy and you should never choose it. In fact, this is all one-sided. Words, in fact, exist to be reasonable. These three development methods all have their own significance, but they are suitable for different people.
1. Customized development
Purely customized development of live broadcast APP source code. Every string of code is typed by programmers. It is very expensive, about 30w, which is certainly unaffordable for ordinary people, but for friends who can make good use of it and achieve greater benefits, this is just a brick on the road to entrepreneurship. The custom development cycle of live broadcast APP is also long, plus the time for testing and modification, so it is not suitable for those who are "anxious".
2. Source code second release
The basic framework and basic functions of the live broadcast APP have been developed. It is also a good choice for people behind to take it back to customize and develop special functions. This source code can Constantly updated during operationThe latest generation, because it is "streamlined production", the market price is usually low, about 70,000, the source code is the most cost-effective development method among the three development methods.
3. Template application
The method of applying templates for live broadcast APP development is actually very common, although from a technical point of view, this method is more "spicy" because it cannot be used. Secondary development cannot change any code in the template, and there is no possibility of secondary development. However, it is more suitable for entrepreneurs who have insufficient budget and want to build the program first, and have the mentality of "operate and try it out". , but it will be more troublesome during later updates or migrations.
In addition to the live broadcast APP development method, the quality of the source code will also affect the answer to your question. Low-quality source code will naturally be lower, so how to judge the quality of the source code?
1. Look at the reputation of the developer’s other products
2. Look at the maintenance status and how many times it has been updated
3. Check whether the code is clean and whether there are any after-sales measures
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4. How much concurrency does the live broadcast APP source code support?
Live broadcast APP development
Low latency, smooth and no lag, excellent interactive experience, no black screen, rich The gift system, the clarity of the live broadcast screen... many things will affect the user experience. If you want to solve these problems, you should not be too picky about the development cost and operating cost of the live broadcast APP. It is particularly important to find a balance between the two.
IV. In terms of deep integration of industry, academia and research, which blockchain companies are doing better
At present, several domestic blockchain companies that are doing well are:
1. Lianxiang Technology: It has always been in a leading position in the application of blockchain technology. It is a leading joint innovation enterprise in China and has changed the innovative research and development model of enterprises.
2. Huobi Technology: It is an advanced domestic blockchain infrastructure and application service provider, providing safe and reliable transaction systems and services for the blockchain market.
3. Open Sesame Technology: A company that focuses on blockchain application solutions and provides secure and highly available blockchain solutions for business systems.
4. Light Chain Technology: Committed to providing efficient and friendly blockchain services to ordinary users, focusing on the open application and popularization of public chains, and also providing customized application services for private chains.
5. Blue Lake Technology: A multinational enterprise focusing on blockchain technology and applications. It is committed to promoting the development of global blockchain technology and applications and assisting the transformation and upgrading of traditional industries.
VI "Illustrations of Blockchain's God-like Fintech and Future Society" pdf download and online reading, please ask for Baidu Netdisk cloud resources
"Illustrations of Blockchain" (Xu Mingtian Ying Li Jiyue) E-book network disk download for free online reading
Resource link:
Link: https://pan..com/s/187I2UEHTf4r0fTzQJj5VVA Password: qmud
Book title: Blockchain with Pictures
Author: Xu Mingxing, Tian Ying and Li Jiyue
Douban rating: 6.0
Publisher: CITIC Press
Publication year: 2017-7
Number of pages: 301
Content introduction:
Blockchain , as sophisticated as a Swiss instrument, as shocking as the Internet, it is subverting society at a god-like pace.
When emerging technologies come, you can choose to avoid them—if you can avoid them tomorrow. The same goes for blockchain.
As a phenomenal concept, financial technology innovation has ushered in a singular development in the past few years. The most eye-catching one is undoubtedly blockchain technology. Blockchain technology is shaking up the global financial infrastructure and is an area that the world's top banks and other financial institutions are pursuing. There is no doubt that blockchain is one of the most promising industries in the next 5 years.
"Blockchain in Pictures" uses vivid and vivid language, comics and stories to comprehensively reveal the basic principles, applications and development prospects of blockchain, and tells readers what blockchain is. What are the application values of blockchain, allowing readers to understand blockchain through a book.
About the author:
Xu Mingxing, founder and CEO of OKCoin & OKLink, vice chairman of the China Branch of the Global Blockchain Business Council. Served as CTO of Docin and development engineer of Yahoo.
Tian Ying, Vice President of OKLink. A senior Internet practitioner and entrepreneur, he has served in listed companies such as Bitauto.com, eLong Travel.com, and Shanghai Zendai, and later participated in the entrepreneurship of technology and financial companies as a co-founder.
Li Jiyue, chief researcher and brand manager of OKLink. A senior Internet finance practitioner, he has served companies such as Rong360 and China Financial Online Group, and is a columnist on Rong360's website "Image Finance" and OKLink's "Illustration of Blockchain".
Ⅶ What kind of technology is "blockchain"?
What kind of technology is "blockchain" Blockchain is a bit An important concept of currency, the "2014-2016 Global Bitcoin Development Research Report" released by Huobi, Tsinghua University PBC School of Finance Internet Finance Laboratory and Sina Technology mentioned that blockchain is the underlying technology and foundation of Bitcoin. architecture. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction and is used to verify the validity of the information (anti-counterfeiting) and generate the next block. .
In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and isCryptographically guaranteed decentralized ledger that cannot be tampered with or forged. Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, uses cryptography to ensure the security of data transmission and access, and utilizes automated Smart contracts are composed of scripts that program and compute data in a new decentralized infrastructure and normalize computing.
Domestic blockchain application platforms include an asset custody system based on blockchain technology jointly developed by the digital currency crowdfunding platform Biying China, China Post and IBM.
Blockchain is a decentralized, distributed ledger system participated by nodes. The data stored on it cannot be forged or tampered with, and is open to the public. Transparent, the information and value recorded by each account at any point in history can be found on the blockchain. The characteristics of the blockchain protocol provide the necessary foundation for the execution of smart contracts. The contract can be automatically executed and trusted according to established conditions without the need for auditing by any centralized organization.
Blockchain technology is the underlying core of the Bitcoin system. Its essence is a decentralized ledger. When people conduct transactions through the Internet, a new transaction will be recorded on the ledger, and this ledger is A decentralized ledger is jointly maintained by everyone on the network. People can see ongoing transactions at the same time, and control is not in the hands of institutions or individuals. Transactions cannot be tampered with or forged, and they will be permanently stored in the ledger.
For example, the Tongxin Huzhu blockchain mutual aid platform has four major characteristics in applying blockchain technology:
Openness and transparency
Openness and transparency, once all information recorded on the blockchain is recorded, it will be very It is difficult to tamper with and cannot be hidden, and users can check it at any time.
Democratic decision-making
Bottom-up decision-making, the blockchain proposes a variety of different consensus mechanisms to help users effectively form bottom-up decisions and jointly participate in major decisions.
Accurate execution of rules
Accurate execution of rules. The smart contract technology defined on the blockchain converts all rules into public and clear codes, which can be executed accurately and accurately. Once anyone is identified Cannot intervene.
Never downtime
Never downtime, the blockchain based on the public chain is not affected by any organization or individual. As long as the incentive mechanism is effective and the Internet exists, the blockchain will exist.
What is blockchain? Blockchain is a decentralized shared accounting technology that allows all parties involved to establish a trusting relationship at the technical level. Blockchain can be roughly divided into two levels: one is the underlying technology of the blockchain; the other is the upper-layer application of the blockchain, that is, the transformation, optimization or innovative application based on the blockchain. Blockchain is still in its infancy, and many people followI discussed how we can ensure both rights and privacy at the same time. Of course, we are just exploring now. We need fair content on the entire network but also clearly protected content. This is all I can say, and this is how I plan to do it in the future.
Blockchain concept? The idea of blockchain is to be completely decentralized and rely on decentralized justice. In that case, theoretically the cost will drop a lot, proving that real assets and property rights can directly correspond to each other on the Internet. It has solved the problems of decentralization and asset ownership that were not solved by the first generation of Internet information. How big a role does big data play in financial innovation now? Only by registering big data can we know who it belongs to. In fact, this has always been a problem that we cannot solve now. This is not a small problem. If there is a technology in the capital market that makes the property rights of things that were originally unclear clear, that will be a big problem for us. The entire market is undergoing a huge transformation.
What is blockchain? Blockchain technology itself can solve data ownership, pricing and sharing mechanisms. This still cannot completely solve certain problems. To give a simple example when it comes to user privacy, I have a piece of data placed on the machine. The partner comes over and makes an insurance analysis to analyze the cooperation. There is a risk here. Or not, can we deal with it or clarify the property rights of the laboratory, and then clarify the processing rights and data rights. The common products produced by everyone are common to everyone. If we need to divide different things, how to price them and how to divide them? In addition to the technology of blockchain and a decentralized database, when it comes to the above mentioned tasks, it is another issue, and then there is the issue of pricing and the market mechanism. All fields have proven to recognize this rule, so this I think blockchain is a very good core technology, but it cannot cover all problems.
Introduction to Bubi Blockchain
Bubi Blockchain is mainly positioned to provide commercial-grade blockchain infrastructure services, which mainly includes building a blockchain system and building on top of the blockchain system. A support system with high expandability. On top of this support system are applications from all walks of life. Bubi focuses more on the underlying technology of the blockchain. In the past three years or so, a team of more than a dozen people has devoted almost all their energy to the research and development of the underlying technology. The reason why Bubi Blockchain chooses points has something to do with the market's promotion method. As we all know, blockchain is a technology that is very suitable for the issuance and trading of digital assets. Points are a digital asset that is naturally legal and compliant, and has a small impact because of its small amount. Therefore, it is a very suitable choice to use points as your first attempt at digital asset issuance. Issuing points based on the blockchain can indeed bring great help to the circulation and mutual exchange of points.
What is blockchain? The application of blockchain technology in the field of property transfer is only one aspect. In addition to reducing property transfer costs, blockchain technology can also be applied to various fields involving company stocks, financial derivatives, and points programs of commercial institutions. The blockchain community is currently focusing on promoting the technology’s use in financeIt has broader applications in the industrial field, and related to it, various platforms that are still under development have also received very considerable investment.
Blockchain concept? Structurally or by definition, these things are very different. The U.S. dollar, or any currency, from a typical definition, is primarily used as a medium of exchange or store of value for economic activities. Within the geographical scope where a certain currency circulates, people in the region reach a consensus on the use of this currency, making it convenient for everyone to use the same currency to purchase goods or services (the function of currency as a medium of exchange). There is a responsibility to manage the currency through monetary policy in order to ensure the preservation of the value of the currency and avoid the occurrence of inflation (the store of value function of currency). In today's world, almost everyone uses some form of currency in their daily lives.
What is blockchain? Even developers within the blockchain community often easily overlook the big picture mentioned above. There are many competitive projects in the blockchain community, and they are also full of various disputes about the evolution direction of blockchain technology. Over time, some projects in the community will be successful, and others will not be so lucky. Things will not always develop in the direction we expect, but no matter how these projects in the early blockchain community develop, one thing is very clear, that is, blockchain technology has brought us at least A revolutionary function: Blockchain technology will greatly reduce the cost of financial property transfer, and blockchain will be used to control, manage and transmit financial property.
What is blockchain? Blockchain concept? After a certain application analysis, we return to the starting point. The definition of this blockchain technology will surely become more and more abundant with the expansion of applications, and people will discover more mysteries of blockchain technology.
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the basis for Bitcoin. underlying technology. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction and is used to verify the validity of the information (anti-counterfeiting) and generate the next block. .
The blockchain is public on the Internet and can be queried in every offline Bitcoin wallet information. The functionality of a Bitcoin wallet relies on confirmation with the blockchain, and a valid check is called a confirmation. Usually a transaction requires several confirmations before it can proceed. The lightweight Bitcoin wallet uses online confirmation, which means it does not download the blockchain data to the device storage.
Many of Bitcoin’s altcoins also use the same design, but are slightly different in proof of work and algorithm. For example, using proof of stake and SCrypt, etc.
Blockchain timestamp service and proof of existence
This concept was proposed in Satoshi Nakamoto’s white paper [1], who created the first block, the “genesis block”.
January 3, 2009On January 3, 2009, Satoshi Nakamoto, the founder of Bitcoin, left a sentence in the genesis block that can never be modified:
"The Times 03/Jan/2009 Chancellor on brink of second lout for banks (January 3, 2009) The Chancellor of the Exchequer is on the verge of implementing a second round of emergency bank bailout)."
It was the moment when the British Chancellor of the Exchequer, Darling, was forced to consider a second step to relieve the banking crisis. This sentence is from The Times The headline of the day's front page article.
With the blockchain’s timestamp service and proof of existence, the time when the first blockchain was created and the events that were happening at that time are permanently retained.
The Bitcoin company BTCC launched a service "Millennium Chain" in 2015, which is a blockchain engraving service, which uses the above principles. Users can engrave text on the blockchain through this service and store it permanently.
Bitcoin, Litecoin, Ruitai Coin, and Qianjin Card are all digital currencies based on blockchain technology.
Chongqing Jinwowo analyzed: Blockchain is actually a decentralized distributed ledger database.
How popular is blockchain technology?
Blockchain technology makes DAC possible. DAC is something that can fundamentally subvert the organizational model of human society. I believe that its impact on society will surpass the Industrial Revolution and become the most profound change that the Internet has brought to the world.
The essence of blockchain technology is a method of data storage, transmission and certification that is decentralized and contained in a distributed structure. It replaces the current Internet with data blocks (Block). The road's reliance on the central server enables all data changes or transaction projects to be recorded on a cloud system, theoretically achieving self-certification of data during data transmission.
Blockchain technology can be applied to many industries:
Art industry
Ascribe allows artists to use blockchain technology to declare ownership, Issue numberable, 100% editions of your work in digital form for any type of artwork. It even includes a marketplace where artists can buy and sell through their website without the need for any intermediary services.
Legal Industry
BitProof is the most advanced of the many document timestamp applications that have emerged in recent years, and will make traditional notarization methods a thing of the past. Compared with free versions including Blocksgin and OriginStaemp, BitProof provides more services, including one for intellectual property rights. Interestingly, BitProof recently partnered with a San Francisco IT school to convert their students’ learningCalendar certificates are placed on the blockchain, completely redefining how diplomas and student certificates are processed and used.
Development Industry
Colu is the first company to allow other companies to issue digital assets. They can "tokenize" various assets and have a profound impact on many people. Although the free Bitcoin wallet Counerparty also allows simple tokens to be issued and traded among other wallet holders, Colu tokens can be configured in various states and types, and can leave and return to the system. , and when storing data on the blockchain is too large, the data can be stored on the BitTorrent network.
Internet Mutual Aid Industry
Tongxin Mutual Aid is the first blockchain online mutual aid platform to be implemented and applied. Technically, through blockchain and big data technology, it eliminates the shortcomings of the traditional online mutual aid model. Establish an open and transparent new online mutual aid platform.
Aite Cat is a virtual pet game produced under blockchain technology. This virtual cat is similar to Internet Letts Dog, 360 pet cat, and NetEase’s Planet are all the same type of blockchain virtual products. The difference between Aite Cat is that the entire cat design uses a 3D three-dimensional effect, making the cat’s The display is no longer a single picture, allowing the cat to move, which increases the fun of the cat.
What technology is the Huangbao blockchain system?The Huangbao blockchain is a powerful decentralized loop intelligence system. The Huangchain chain is referred to as HUANG. It is the first to be used in financial services, advertising media, games and entertainment, various life applications and other fields, becoming a blockchain 3.0 The representative virtual currency of the era, Media Chain 3.0 technology has the core characteristics of being safer, more efficient, more flexible, and more open. The widespread application of its technology will surely trigger new forms and new ideas in the global media industry, which can Create convenient services and new concepts, which marks a new economic era before the public.
Ⅷ Illustration of what is blockchain
Blockchain is so popular that it has begun to affect my life. I don’t even want to understand it. Today I will take a look at what it is. It's blockchain.
Structure of this article:
As its name suggests,
A blockchain is a chain composed of a set of blocks.
A block is a block of information that contains information. , the chain also contains information.
Blockchain technology was first developed by a group of researchers in 1991 to time-stamp digital documents so that these documents cannot be tampered with. It essentially played no other role after that, until 2009, when Satoshi Nakamoto used blockchain technology to create the digital cryptocurrency Bitcoin.
A blockchain is a distributed ledger that is completely open to everyone. It has an interestingProperties: Once certain data is recorded in a blockchain, it is difficult to change the data.
Let’s take a look at the composition of a block:
Each block contains some data, the hash value of this block, and the hash value of the previous block. Hope value.
The data saved in the block is related to the type of blockchain. For example, the blocks in the Bitcoin blockchain save relevant transaction information, including sellers, buyers, and transaction Bitcoins. quantity.
Each block contains a hash value. The hash value is used to identify a block and all the content it contains, and it is unique, like a fingerprint. Once a block is created, its hash value is calculated accordingly. If you change something in the block, the hash value will change. If the fingerprint of a block changes, it will no longer be the previous block.
The third element contained in the block is the hash value of the previous block. This element allows links to be formed between blocks and makes the blockchain very secure.
Suppose we have a blockchain containing 3 blocks
Each block contains its own hash value and the hash value of the previous block
No. 3 Block points to block No. 2, and block No. 2 points to block No. 1
Block No. 1 is a bit special, it cannot point to the previous block because it is the first
We put 1 The block number is called the genesis block.
Now suppose we tamper with the second block
This will cause the hash value of the second block to change
This will then cause block 3 and 3 All subsequent blocks connected to the block number become illegal
Because the previous block number they store now becomes illegal
So changing one block alone will jointly make all subsequent blocks The content becomes invalid.
But to prevent tampering, hashing is not enough
Because today’s computer computing speed is powerful enough and can calculate thousands of hash values per second
This way You can tamper with a block and recalculate the hashes of other blocks, making your block legal again.
So in order to reduceFor this risk, the blockchain also uses a technology called proof of work
This is a mechanism that slows down the process of creating new blocks
In the Bitcoin blockchain, it takes about 10 minutes to Complete the required proof of work and add a new block to the blockchain
This mechanism makes tampering with the blockchain more difficult
because once a block is tampered with, all blocks need to be recalculated Proof of work for subsequent blocks.
Therefore, the security of blockchain technology mainly comes from hash value and workload proof mechanism.
Blockchain also has a mechanism to protect its own security, which is distributed
Compared to using a centralized entity to manage the blockchain network, blockchain uses A peer-to-peer network that anyone can join
When someone joins this network, he will get a copy of the entire blockchain
This person can use this to verify that all The blocks are still legal and untampered, that is, different nodes can use this to verify each other.
When someone creates a new block,
the new block is sent to everyone on the network.
Everyone then verifies the block to ensure that it has not been tampered with.
If everything is verified correct, then everyone can add the new block to their own area. On the blockchain
We can call it that everyone on the network has reached a "consensus".
All nodes in the blockchain network reach a consensus
They agree on which blocks in the network are legal and which are illegal
Those blocks that have been tampered with will will be rejected by other users on the network
So, to successfully tamper with a blockchain, you need to tamper with all blocks on the blockchain
Recomplete the proof of work for each block and control More than 50% of the users in the blockchain network
Only in this way will the block you tamper with will be recognized by everyone
It can be said that this is basically impossible to do!
Blockchain technology itself is also constantly developing
For example, a later technological improvement is called smart contracts
Smart contracts are simple programs stored on the blockchain
br /> It can be automatically executed based on the conditions recorded in the contract. As long as the conditions are met, the contract will be automatically executed.Completing Transactions
For example, Bitcoin transactions can be automated under certain conditions.
Learning materials:
https://www.youtube.com/watch?v=SSo_EIwHSd4
Ⅸ What are the technical principles of how to implement on-chain acceleration in blockchain games?
Blockchain news, Bitcoin is to the blockchain what email is to the Internet. As we all know, for the first time in the history of human information dissemination and exchange, email has realized the function of sending data to anyone else in the world in a timely, free, and verifiable manner. Both the sender and the receiver can save a copy of the data sent in the email. . However, copies of email data retained by both parties also become an inherent flaw in online value transfers, since both parties own its value. Therefore, there must be a third-party institution that ensures that the value is not credited by double spending, for example, a bank, stock exchange, clearing center or notary. As an Internet protocol, Bitcoin allows transaction parties to transfer value to each other instantly and securely without the need for the existence of intermediary organizations such as credit third parties, thus reducing transaction costs and improving transaction efficiency. The editor now compiles a schematic diagram of the principles of blockchain technology and related technical principles for everyone.
Literally, the blockchain is a distributed ledger system composed of a series of data blocks generated using cryptographic methods. Each data block contains a large amount of transaction information and is used to verify its information. validity and generate the next block. These blocks are arranged one after another in the order of generation, and each block is a node.
The distinctive feature of the blockchain is that there is no third-party supervision as a central server, and the transaction information in the block cannot be changed. The information contained in a block can be a financial transaction or any other digital transaction, including documents. The success of the Internet business model that has long dominated the business world of human society relies on the role of credit-granting third-party financial institutions that process and mediate electronic transactions. The role of the credit-granting third party is to verify, protect and preserve transaction records.
Despite this, fraudulent online transactions still exist in large numbers, requiring mediation by a credit-granting third party, resulting in higher transaction costs. Bitcoin, based on blockchain technology, uses cryptographic proof rather than a credit third party, so that all parties willing to trade can achieve online transactions through the Internet.
Every transaction can be protected by a digital signature and sent to the recipient's "public key" that is digitally signed using the sender's "private key". Owners of Bitcoin, the cryptocurrency, need to prove ownership of their “private keys” in order to spend and trade online. The party receiving digital currency uses the sender's "public key" to verify the digital signature on the transaction, i.e., ownership of the other party's "private key".
Every transaction is broadcast to every node in the Bitcoin network and recorded in the public ledger after verification. And before every transaction is recorded in the public ledger, it needs to beValidity verification, therefore, the verification node needs to ensure two things before recording each transaction: namely,
(1) The consumer has signature certification for its encrypted electronic currency;
< p>(2) There is sufficient cryptocurrency in the consumer's account.Figure 1 shows the transaction process and principle based on blockchain technology.
Hope this answer is helpful to you
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